About drasyl
drasyl enables quick and easy development of high-performance distributed applications. Driven by a secure and low-latency overlay network protocol, drasyl provides any-to-any connectivity between all Internet-enabled devices.
To prevent developers from reinventing the wheel, drasyl provides extensions that address common challenges for distributed systems like identity/key management, resource discovery, and locality-aware message routing. By using drasyl, developers are unburdened of many usual tasks and can proceed directly with building their distributed application.
Learn More- Any-to-any connectivity between all Internet-enabled devices.
- Locality-aware message routing.
- Middlebox traversal (like firewalls or network address translators).
- Driven by a secure & low-latency overlay network protocol.
- Cryptographic identity & key management.
- Rich set of extensions for perfect forward secrecy communication, service & resource discovery, reliable transport, error control, traffic shaping, etc.
Projects
drasyl is used in a number of research projects, where it is in charge of secure and pervasive communication.
Smart Networks for Urban Participation
Open, citizen-centric, scalable, and privacy-preserving smart city platform.
Attribute-Based SkipNet
Enhanced SkipNet overlay supporting attributed-based search and range queries.
Publications
H. Bornholdt, K. Röbert, and P. Kisters, "Accessing Smart City Services in Untrustworthy Environments via Decentralized Privacy-Preserving Overlay Networks", 2021 IEEE International Conference on Service-Oriented System Engineering (SOSE). 2021, Oxford, United Kingdom. DOI: 10.1109/SOSE52839.2021.00021.
H. Bornholdt, K. Röbert and M. Fischer, "Low-Latency TLS-1.3-aware Hole Punching", ICC 2023 – IEEE International Conference on Communications. 2023, Rome, Italy.
H. Bornholdt, K. Röbert, M. Breitbach, M. Fischer and J. Edinger, "Measuring the Edge: A Performance Evaluation of Edge Offloading", 2023 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events (PerCom Workshops). 2023, Atlanta, USA. DOI: 10.1109/PerComWorkshops56833.2023.10150261.
K. Röbert, H. Bornholdt, M. Fischer and J. Edinger, "Latency-Aware Scheduling for Real-Time Application Support in Edge Computing", EdgeSys ’23 – The 6th International Workshop on Edge Systems, Analytics and Networking. 2023, Rome, Italy. DOI: 10.1145/3578354.3592866.
H. Bornholdt, K. Röbert, S. Schulte, J. Edinger and M. Fischer, "A Software-Defined Overlay Networking Middleware for a Simplified Deployment of Distributed Application at the Edge", The 40th ACM/SIGAPP Symposium On Applied Computing (SAC'25). 2025. Catania, Italy. Accepted for Publication.
H. Bornholdt, "Software-Defined Overlay Networking for the Deployment of Distributed Applications at the Edge", PhD thesis. University of Hamburg. URN: urn:nbn:de:gbv:18-ediss-124485.
Team
drasyl is being developed by researchers and students of the Universität Hamburg as part of research projects and lectures.
Dr. Heiko Bornholdt
Senior Research Assistant